Concepts of Operations: Avionics

Subsystem Overview

The Avionics subsystem is responsible for handling the majority of operations onboard the cubesat. This domain includes interfacing with sensors, subsytems, reactional computations/actions, and telemetry handling. Due to time, experience, and reliability restrictions, we will be only focusing on the development of software and not pursuing the path of designing our own PCB's.

Product Requirements

Engineering Requirements

System Requirements

Design Requirement Minimum Target
Max Power Draw 0.5W 0.2W
Heat -40C to 85C skew to safer range

Component Selection

Primary Component: CubeSatKit Motherboard + MSP430 PPM

Lack of complete secondary kits that meet the same level of documentation, cost, and heritage. #### Component justification - Already own development kit for the hardware - Flight heritage with the board and RTOS - Low power and simplistic

Subsystem Failure Modes

Failure Severity(1-3) Likelihood(1-3) Total(1-9)
Single Event Upset 3 1 3
Overheating 3 1 3
Magnetization 3 1 3
Developed Software Errors 3 2 6
Operating System Error 2 1 2
Insufficient power to operate 3 1 3
Other failed subsyste/sensor 1 2 3